Driving Wheel Cooling Passages for Clean Room Tire Heat Control
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Solution Overview
Problem
Tires used in transport apparatuses in clean rooms experience aging and generate particles due to partial shrinkage and expansion, which is accelerated by heat generation, leading to reduced lifespan and increased particle generation.
Innovation Solution
A driving wheel with a wheel housing featuring inclined cooling passages and a heat dissipation module that increases air contact area, including cooling plates and auxiliary cooling plates, to effectively dissipate heat and reduce particle generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the transport apparatus operates continuously, then productivity is improved, but heat is generated in the tire causing accelerated aging and increased particle generation
Solution Approach 1:
A cooling passage is introduced as an intermediary element between the tire and the external environment. The cooling passage allows coolant to flow through and absorb heat from the tire, acting as a mediator to transfer thermal energy away from the tire without requiring direct external cooling intervention during operation.
Solution Approach 2:
The cooling system utilizes hydraulic principles by circulating coolant through the cooling passage. The coolant absorbs heat from the tire through thermal conduction and carries it away, applying fluid-based heat transfer to solve the thermal management problem during continuous operation.
2Adaptability or versatility
If the tire undergoes partial shrinkage and expansion due to load, then the transport apparatus can adapt to varying loads, but heat is generated accelerating aging and particle generation
Solution Approach 1:
The cooling system converts the harmful thermal energy generated during load-induced shrinkage and expansion into a manageable heat transfer process. By introducing coolant flow through the cooling passage, the system captures and removes the heat that would otherwise accelerate aging and particle generation, turning a harmful byproduct into a controlled thermal management opportunity.
3Temperature
If cooling passages are added to the wheel housing, then heat dissipation is improved, but device complexity increases
Solution Approach 1:
The wheel housing is designed to serve multiple functions: it provides structural support for the wheel assembly and simultaneously acts as a coolant conduit through the integrated cooling passage. This multi-functionality reduces the need for separate cooling components, thereby limiting the increase in device complexity while still achieving effective heat dissipation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively cools the wheel and tire, reducing heat-related aging and particle generation, thereby extending tire lifespan and maintaining clean room integrity.
Implementation Method 1
at least one cooling passage that penetrates between the first side and the second side may be in the wheel housing
Implementation Method 2
The solution effectively cools the wheel and tire, reducing heat-related aging and particle generation
Implementation Method 3
a heat dissipation module that increases air contact area, including cooling plates and auxiliary cooling plates, to effectively dissipate heat
Data Source
AI summary
A transport apparatus includes: a body; and a driving wheel that is rotatably connected to the body around a central axis, wherein the driving wheel comprises a wheel housing, the wheel housing comprises a first side positioned opposite to the body along the central axis direction and a second side that faces the body, and at least one cooling passage that penetrates between the first side and the second side is in the wheel housing.